@article{ELMA_1977__32_141187,
     author = {Eberhard Schr\"oder},
     title = {Untersuchungen zu eienm hyperoskulierenden {B\"uschel} von {Kegelschnitten.} {II.}},
     journal = {Elemente der Mathematik},
     pages = {6--11},
     publisher = {mathdoc},
     volume = {32},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1977__32_141187/}
}